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eruption

 [ih-ruhp-shuhn]   Example Sentences Origin

e·rup·tion

   [ih-ruhp-shuhn]
noun
1.
an issuing forth suddenly and violently; outburst; outbreak.
2.
Geology. the ejection of molten rock, steam, etc., as from a volcano or geyser.
3.
something that is erupted or ejected, as molten rock, volcanic ash, or steam.
4.
Pathology.
a.
the breaking out of a rash or the like.
b.
a rash or exanthem.
Origin:
1375–1425; late Middle English < Latin ēruptiōn- (stem of ēruptiō). See erupt, -ion

Related forms
e·rup·tion·al, adjective
non·e·rup·tion, noun
pre·e·rup·tion, noun
re·e·rup·tion, noun

Can be confused: eruption, irruption.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Eruption is always a great word to know.
So is percolation. Does it mean:
rich soil containing a relatively equal mixture of sand, silt and a smaller proportion of clay
slow movement of water through the pores in soil or permeable rock
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Example Sentences
  • The eruption came from the old summit crater and a vent on a north side of the peak.
  • Those sobs were an eruption of humanity in what was supposed to be an impersonal interaction.
  • But in retrospect, the eruption can be seen to exemplify certain truths about climate change.
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Collins
World English Dictionary
erupt (ɪˈrʌpt)
 
—vb
1.  to eject (steam, water, and volcanic material such as lava and ash) violently or (of volcanic material, etc) to be so ejected
2.  (intr) (of a skin blemish) to appear on the skin; break out
3.  (intr) (of a tooth) to emerge through the gum and become visible during the normal process of tooth development
4.  (intr) to burst forth suddenly and violently, as from restraint: to erupt in anger
 
[C17: from Latin ēruptus having burst forth, from ērumpere, from rumpere to burst]
 
e'ruptible
 
—adj
 
e'ruption
 
—n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

eruption
1555, from L. eruptionem (nom. eruptio) "a breaking out," from stem of erumpere "break out, burst forth," from ex- "out" + rumpere "to break, rupture" (see rupture).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

eruption e·rup·tion (ĭ-rŭp'shən)
n.

  1. An appearance of a rash or blemish on the skin.

  2. Such a rash or blemish.

  3. The emergence of a tooth through the gums.

e·rup'tive (-tĭv) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
eruption   (ĭ-rŭp'shən)  Pronunciation Key 
The release of gas, ash, molten materials, or hot water into the atmosphere or onto the Earth's surface from a volcano or other opening in the Earth's surface.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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